> You don't rely on the natural light for these photos
That's only because natural light isn't available. Modern diving lights use inaccurate color-rendering cool white LEDs heavy in the blue spectrum. To get the reds, a diver would actually need a second light source that has red LEDs. So much depends on the narrow color spectrum profile of these shitty LEDs. But incan light sources, no longer made and sold but for vintage collectables, burn tungsten, so the color spectrum is wide and very much like that of the sun, though warmer than the sun at noon, and they always produce a perfect color rendition. High CRI LEDs from Nichia and Cree are getting closer to natural light, with 93+ CRI and warmer color temperatures with pinker tints, but dive light manufacturers have not discovered these yet. So the best a diving photographer can do is to search for and find a bright halogen light source around 3200K. But instead, they shoot washed-out RAW digital images and use digital color post-processing resulting in something that can't ever be seen with human eyes in the real world because it doesn't exist. So, lies.
That's only because natural light isn't available. Modern diving lights use inaccurate color-rendering cool white LEDs heavy in the blue spectrum. To get the reds, a diver would actually need a second light source that has red LEDs. So much depends on the narrow color spectrum profile of these shitty LEDs. But incan light sources, no longer made and sold but for vintage collectables, burn tungsten, so the color spectrum is wide and very much like that of the sun, though warmer than the sun at noon, and they always produce a perfect color rendition. High CRI LEDs from Nichia and Cree are getting closer to natural light, with 93+ CRI and warmer color temperatures with pinker tints, but dive light manufacturers have not discovered these yet. So the best a diving photographer can do is to search for and find a bright halogen light source around 3200K. But instead, they shoot washed-out RAW digital images and use digital color post-processing resulting in something that can't ever be seen with human eyes in the real world because it doesn't exist. So, lies.